DOI: 10.1029/2018JD028578
Scopus记录号: 2-s2.0-85049863287
论文题名: Microphysical and Kinematic Structure of Convective-Scale Elements in the Inner Rainband of Typhoon Matmo (2014) After Landfall
作者: Wang M. ; Zhao K. ; Lee W.-C. ; Zhang F.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 12 起始页码: 6549
结束页码: 6564
语种: 英语
英文关键词: heavy rainfall formation
; inner rainband
; kinematic structure
; microphysical structure
; polarimetric radar
Scopus关键词: accretion
; coalescence
; Doppler radar
; freezing
; inflow
; kinematics
; melting
; observational method
; rainband
; rainfall
; typhoon
; China
英文摘要: The detailed microphysical structure and processes associated with the kinematic structure of the inner rainband of Typhoon Matmo (2014) over East China were examined using observations from an S band polarimetric Doppler radar and an S band Doppler radar. The kinematic structure of convective cells within the inland inner rainband was similar to that of the principal rainband over the ocean in terms of both updrafts and downdrafts. The hydrometeors within convective regions above the freezing level presented a layered pattern, with ice crystals at the top, dry snow in the middle, and graupel at the bottom just above the freezing level. Dry snow and graupel particles were mainly distributed downwind in relation to the overturning updraft. Heavy rainfall occurred mostly in the updraft region and the region affected by graupel. To further investigate the formation of heavy rainfall, variations in reflectivity, differential reflectivity, and rainwater content within different layers were examined. Two distinct mechanisms were identified: (1) in the updraft region the heavy rainfall was predominantly produced through warm-rain processes of autoconversion, accretion, and coalescence between 0.5 and 5 km in altitude; and (2) outside the updraft region, the heavy rainfall was mainly produced through melting of graupel particles. Evaporation was also observed within the radial inflow layer, most likely due to the cool dry air transported by the low-level downdraft. This study revealed, for the first time, the interactions between the microphysical and kinematic structure and the vertical evolution of warm-rain processes in the inner rainbands of tropical cyclones after landfall. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113688
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Mesoscale Severe Weather/MOE and School of Atmospheric Sciences, Nanjing University, Nanjing, China; National Center for Atmospheric Research, Boulder, CO, United States; Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, PA, United States
Recommended Citation:
Wang M.,Zhao K.,Lee W.-C.,et al. Microphysical and Kinematic Structure of Convective-Scale Elements in the Inner Rainband of Typhoon Matmo (2014) After Landfall[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(12)